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Fact Sheet Treuhand Arn & Partner AG

Core Company Information
Company Name Treuhand Arn & Partner AG
UID CHE-107.915.059
Alternative / previous Names Treuhand Werner Arn AG
Domicile Lyss
Canton BE
Legal Form Limited corporation
Inscription Date 02.03.1987
FAOA Information
FAOA ID 500233
RAB Permission licensed auditor
FAOA License active (since 24.10.2007)
Link to FAOA website View auditor profile at FAOA
Branch offices (0) -
Membership in Associations EXPERTsuisse
TREUHAND|SUISSE
Number of auditors with permission 3  (11.33 audit engagements per employee on average)
Auditor Statistics

Average engagement duration: 11.4 years (max.: 29 years)

Total number of statutory audit engagements: 34 (Ranked #173 in Switzerland)

Change in number of audit engagements: -2 (since 31.12.2024), -2 (over the last 12 months)

Details regarding the distribution of the audit engagements across legal forms and cantons are depicted in the table below.

  Bern Schwyz Zug Zürich ∑
Limited corporation 19 1 1 2 23
Limited liability company 2       2
Foundation 6       6
Cooperative 1       1
Association 2       2
∑ 30 1 1 2 34

This audit firm is recorded as statutory auditor for 16 deleted entities. These are not included in the table above.

Display client list

Latest audit engagements
These are this auditor's latest audit engagements.
 
Client Name Client UID Domicile Start Date Type of switch Auditor Branch
MPD Seeland AG CHE-213.562.142 Aarberg 27.11.2025 First auditor Lyss
collana solutions AG CHE-110.511.337 Wollerau 07.08.2024 Auditor switch Lyss
Neolution AG CHE-105.355.847 Freienbach 07.08.2024 Auditor switch Lyss
collana health AG CHE-395.330.868 Bern 29.11.2023 First auditor Lyss
Hostettler Mechanik AG CHE-313.179.306 Kappelen 22.02.2023 First auditor Lyss
Discontinued audit engagements
The following audit engagements were lost recently, either to a competitor, due to auditor resignation or due to an opting out.
 
Client Name Client UID Domicile End Date Reason Auditor Branch
Kleinbusbetrieb Eicher GmbH CHE-109.484.432 Lyss 05.09.2025 Auditor switch Lyss
Geras Pflegehotel AG CHE-183.961.328 Sutz-Lattrigen 13.06.2025 Auditor switch Lyss
Personalfürsorgestiftung der Metalyss AG CHE-109.790.840 Lyss 12.12.2024 Auditor switch Lyss
Garage Leiser AG CHE-107.170.827 Lyss 29.11.2024 Auditor switch Lyss
Alpart Holding AG CHE-113.957.132 Lyss 08.10.2024 Auditor switch Lyss